tert-Butyl 4-bromo-3-methyl-1H-pyrazole-1-carboxylate

Also known as: 1-BOC-4-Bromo-3-methylpyrazole, N-Boc-4-bromo-3-methyl-pyrazole, tert-butyl 4-bromo-3-methylpyrazole-1-carboxylate

tert-Butyl 4-bromo-3-methyl-1H-pyrazole-1-carboxylate (CAS 1021919-24-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H13BrN2O2 and a molecular weight of 261.11600 g/mol. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1021919-24-3
Jingsj CID: J-1495901-4
Molecular Formula: C₉H₁₃BrN₂O₂
Molecular Weight: 261.11600 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Exact Mass	260.01600
PSA	44.12000
LogP	2.73720

Customs & Trade Information

HS Code	2933199090
Summary	2933199090. other compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of tert-Butyl 4-bromo-3-methyl-1H-pyrazole-1-carboxylate?

The CAS number of tert-Butyl 4-bromo-3-methyl-1H-pyrazole-1-carboxylate is 1021919-24-3.

What are the molecular formula and molecular weight of tert-Butyl 4-bromo-3-methyl-1H-pyrazole-1-carboxylate?

tert-Butyl 4-bromo-3-methyl-1H-pyrazole-1-carboxylate has molecular formula C9H13BrN2O2 and molecular weight 261.11600 g/mol.

What are the upstream and downstream products of tert-Butyl 4-bromo-3-methyl-1H-pyrazole-1-carboxylate?

For tert-Butyl 4-bromo-3-methyl-1H-pyrazole-1-carboxylate, Upstream Products: 4-Bromo-3-methyl-1H-pyrazole, Di-tert-butyl dicarbonate; Downstream Products: 3-Methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "tert-Butyl 4-bromo-3-methyl-1H-pyrazole-1-carboxylate (CAS 1021919-24-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1495901-4 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.